I had never known they held this species, thank you for sharing!
I looked through the MMIR for more information on their collection:
- They imported 1.4 roughly year-old South American sea lions (Albert, Easter, Greta, Summer, and one unlisted) on March 9th, 1974, from an unnamed foreign facility
- A pup was born on July 6th, 1977, though passing away on the 14th from an infected umbilicus
- On October 11th, 1977 the unnamed female drowned during a mating attempt with the bull, Albert, leaving the park with 1.3 sea lions
- On March 27th, 1979 female sea lion Easter died from a bite wound, leaving the park with 1.2 sea lions Albert, Greta, and Summer
- On July 29th, 1980 female sea lion Greta died from hyperthermia, leaving the park with 1.1 sea lions Albert and Summer
- The park imported 0.3 additional sea lions from an unnamed foreign facility on October 12th, 1980; however, all three were deceased upon inspection at the Kennedy Airport
- On April 8th, 1981 the remaining pair (1.1 Albert and Summer) were transferred to SeaWorld Orlando, thus ending the exhibition of South American sea lions at Riverbanks.
SeaWorld Orlando exported Albert (now renamed Billy) and Summer to Marineland Antibes on March 15th, 1983. Albert / Billy passed away at Marineland from cancer and pneumonia on July 11th, 1991; Marineland stopped contributing data to the MMIR in late 1995, at which point Summer was still living at the park.
I'd love to know more about these individuals and their origins if anyone has any further information!